A wood product paint waste gas collecting and processing device

Abstract

The utility model discloses a wood product paint waste gas collection processing device, including the collection cover, one side of collection cover is equipped with the absorption liquid tank, one side surface fixed inlay of collection cover has and draws the filter piece, the top of absorption liquid tank is equipped with the discharge pipe, the bottom end of discharge pipe penetrates absorption liquid tank and extends to the inside of absorption liquid tank, one side surface fixed communication of absorption liquid tank has the communicating pipe, one end fixed communication of communicating pipe has the processing box, the inner top wall fixed mounting of processing box has ultraviolet light lamp board, the inner wall fixed mounting of processing box has catalyst processing layer, ultraviolet light lamp board and communicating pipe all are located the top of catalyst processing layer, one side fixed mounting of processing box has active carbon adsorption cylinder. The device adopts collection, filter, absorption, light catalytic oxidation and active carbon adsorption multistage processing flow, realizes the pertinence removal of various pollutants in waste gas, improves the processing efficiency of complex paint waste gas.

Description

Technical Field

[0001] This utility model relates to the field of wood product manufacturing, and in particular to a device for collecting and treating exhaust gas from wood product painting. Background Technology

[0002] In the field of wood product manufacturing, painting is an indispensable and important step. Through processes such as spraying, brushing, and spraying, paint is evenly applied to the surface of wood products. After drying and curing, it not only significantly improves the appearance and texture of wood products, giving them a rich variety of colors and textures, but also forms a protective barrier, enhancing the wear resistance, corrosion resistance, and moisture resistance of wood products, effectively extending their service life.

[0003] However, this process inevitably generates a large amount of waste gas. If this waste gas is discharged directly without effective treatment, it will not only pollute the atmospheric environment, forming photochemical smog and exacerbating environmental problems such as haze, but also pose a serious threat to the health of operators in the production workshop. At present, among the technologies for treating waste gas from wood product painting, activated carbon adsorption has become a widely used treatment method due to its advantages such as relatively simple operation and low initial investment cost. However, activated carbon is easily blocked by paint droplets, resulting in a decrease in adsorption capacity, requiring frequent replacement, and its treatment effect on paint waste gas is poor. Therefore, we propose a wood product painting waste gas collection and treatment device to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a device for collecting and treating exhaust gas from wood product painting, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A wood product paint waste gas collection and treatment device includes a collection hood, an absorption liquid tank on one side of the collection hood, an extraction filter element fixedly embedded on one side of the collection hood, a discharge pipe above the absorption liquid tank, the bottom end of the discharge pipe penetrating the absorption liquid tank and extending into the interior of the absorption liquid tank, a connecting pipe fixedly connected to one side of the absorption liquid tank, a treatment box fixedly connected to one end of the connecting pipe, an ultraviolet lamp plate fixedly installed on the inner top wall of the treatment box, a catalyst treatment layer fixedly installed on the inner wall of the treatment box, the ultraviolet lamp plate and the connecting pipe being located above the catalyst treatment layer, and an activated carbon adsorption cylinder fixedly installed on one side of the treatment box.

[0007] In a further embodiment, the extraction filter element includes an extraction filter cover fixedly embedded on one side of a collection cover, and a centrifugal fan is fixedly installed on the inner wall of the extraction filter cover.

[0008] In a further embodiment, a non-woven fabric filter and a glass fiber filter are fixedly installed on the inner wall of the extraction filter cover, and one end of the extraction filter cover is movably connected to one end of the discharge pipe.

[0009] In a further embodiment, the bottom surface of the collection hood is fixedly connected to multiple flow guide hoods, and the inner wall of each flow guide hood is fixedly connected to a mesh plate.

[0010] In a further embodiment, a connecting block is fixedly installed on one side of the absorption tank, and one side of the connecting block is fixedly installed with one side of the processing tank.

[0011] In a further embodiment, the upper surface of the absorbent tank is fixedly connected to an injection pipe, the outer surface of the absorbent tank is fixedly inlaid with a transparent observation plate, the bottom surface of the absorbent tank is fixedly connected to a drain pipe, and the outer surface of the drain pipe is fixedly connected to a drain valve.

[0012] In a further embodiment, a gas outlet pipe is fixedly connected to one side of the treatment box, and the top end of the gas outlet pipe penetrates through the activated carbon adsorption cylinder and extends into the interior of the activated carbon adsorption cylinder.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This device can intercept most paint droplets and particulate matter by extracting the non-woven fabric filter and glass fiber filter from the filter element. In addition, the absorbent in the absorbent tank can further absorb residual paint droplets and water-soluble pollutants. Then, by using the ultraviolet lamp plate and catalyst treatment layer inside the treatment box, some organic pollutants can be decomposed through photocatalytic oxidation. After these treatments, the paint droplet content in the exhaust gas entering the activated carbon adsorption cylinder can be significantly reduced, effectively preventing the activated carbon pores from being blocked, extending the service life of the activated carbon, and reducing the replacement frequency.

[0015] Furthermore, this device employs a multi-stage treatment process involving collection, filtration, absorption, photocatalytic oxidation, and activated carbon adsorption to achieve targeted removal of various pollutants in the exhaust gas. Compared to the single activated carbon adsorption method, it improves the treatment efficiency for complex paint exhaust gases. Attached Figure Description

[0016] Figure 1 A frontal three-dimensional structural diagram of a wood product paint exhaust gas collection and treatment device.

[0017] Figure 2 A side sectional view of a wood product paint exhaust gas collection and treatment device.

[0018] Figure 3 This is a three-dimensional structural diagram of the collection hood in a wood product paint exhaust gas collection and treatment device, viewed from below.

[0019] Figure 4 This is a side sectional view of the absorbent liquid tank in a wood product paint exhaust gas collection and treatment device.

[0020] Figure 5 This is a top-view three-dimensional structural diagram of the absorbent liquid tank in a wood product paint waste gas collection and treatment device.

[0021] In the diagram: 1. Collection hood; 2. Absorption liquid tank; 3. Extraction filter element; 301. Extraction filter hood; 302. Centrifugal fan; 303. Non-woven fabric filter screen; 304. Glass fiber filter screen; 4. Discharge pipe; 5. Treatment box; 6. Connecting pipe; 7. Ultraviolet lamp plate; 8. Catalyst treatment layer; 9. Transparent observation plate; 10. Guide gas outlet pipe; 11. Activated carbon adsorption cylinder; 12. Connecting block; 13. Guide hood; 14. Grid plate; 15. Liquid injection pipe; 16. Sewage pipe; 17. Sewage valve. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In terms of circuit structure, the drive and control circuits of this utility model are common and mature technologies. Those skilled in the art can select appropriate circuit components to build the system according to the power requirements and control requirements of the equipment. For the power supply components, common general power supply equipment on the market can be used, as long as it meets the voltage and current requirements of the equipment. No special design is required. In addition, the exhaust gas treatment components of this application are all common products in the prior art. This application will not elaborate on their internal structure.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 In this utility model, a wood product paint waste gas collection and treatment device includes a collection hood 1, an absorption liquid tank 2 on one side of the collection hood 1, an extraction filter 3 fixedly embedded on one side of the collection hood 1, a discharge pipe 4 above the absorption liquid tank 2, the bottom end of the discharge pipe 4 penetrating the absorption liquid tank 2 and extending into the interior of the absorption liquid tank 2, a connecting pipe 6 fixedly connected to one side of the absorption liquid tank 2, a treatment box 5 fixedly connected to one end of the connecting pipe 6, an ultraviolet lamp plate 7 fixedly installed on the inner top wall of the treatment box 5, a catalyst treatment layer 8 fixedly installed on the inner wall of the treatment box 5, the ultraviolet lamp plate 7 and the connecting pipe 6 are both located above the catalyst treatment layer 8, and an activated carbon adsorption cylinder 11 fixedly installed on one side of the treatment box 5. Through the absorption liquid in the absorption liquid tank 2, residual paint droplets and water-soluble pollutants can be further absorbed. Then, using the ultraviolet lamp plate 7 and the catalyst treatment layer 8 inside the treatment box 5, some organic pollutants can be decomposed through a photocatalytic oxidation process.

[0026] In a further embodiment, the extraction filter element 3 includes an extraction filter cover 301 fixedly embedded on one side of the collection cover 1. A centrifugal fan 302 is fixedly installed on the inner wall of the extraction filter cover 301. A non-woven fabric filter screen 303 and a glass fiber filter screen 304 are fixedly installed on the inner wall of the extraction filter cover 301 respectively. One end of the extraction filter cover 301 is movably connected to one end of the discharge pipe 4. By starting the centrifugal fan 302 inside the extraction filter cover 301, a negative pressure environment can be formed inside the collection cover 1, guiding the paint exhaust gas through the guide cover 13 to converge into the collection cover 1, thereby achieving efficient collection of the paint exhaust gas. The non-woven fabric filter screen 303 intercepts paint droplets and particulate matter with larger particle sizes, and the glass fiber filter screen 304 further filters out small particles, achieving preliminary purification of the exhaust gas and reducing the pressure on the subsequent treatment module. The discharge pipe 4 can introduce the exhaust gas into the absorption liquid inside the absorption liquid tank 2 for absorption treatment.

[0027] In a further embodiment, the bottom surface of the collection hood 1 is fixedly connected to multiple guide hoods 13, and the inner wall of each guide hood 13 is fixedly connected to a mesh plate 14. A connecting block 12 is fixedly installed on one side of the absorption liquid tank 2, and one side of the connecting block 12 is fixedly installed to one side of the treatment tank 5. An injection pipe 15 is fixedly connected to the upper surface of the absorption liquid tank 2, and a transparent observation plate 9 is fixedly embedded on the outer surface of the absorption liquid tank 2. A drain pipe 16 is fixedly connected to the bottom surface of the absorption liquid tank 2, and a drain valve 17 is fixedly connected to the outer surface of the drain pipe 16. A guide gas outlet pipe 10 is fixedly connected to one side of the treatment tank 5, and the top end of the guide gas outlet pipe 10 penetrates the activated carbon adsorption cylinder. 11 extends into the interior of the activated carbon adsorption cylinder 11. Through the guide hood 13 and multiple grid plates 14, the exhaust gas can be guided and extracted. The liquid injection pipe 15 can be used to add absorbent, which can absorb water-soluble pollutants and some paint droplets in the exhaust gas. In addition, the transparent observation plate 9 on the surface of the absorbent tank 2 makes it easy to observe the degree of pollution of the absorbent. When the absorbent is saturated or severely polluted, it can be discharged and replaced through the drain pipe 16 and drain valve 17 to ensure the absorption effect. The connection block 12 can be used to fix the treatment box 5, making the treatment box 5 more secure. The exhaust pipe 10 is used to guide the exhaust of the treated gas.

[0028] The working principle of this utility model is as follows: First, after the centrifugal fan 302 in the extraction filter element 3 is started, a negative pressure is formed in the collection hood 1, which guides the paint exhaust gas to converge in the collection hood 1 through the guide hood 13. After the exhaust gas enters the extraction filter hood 301, it passes through the non-woven fabric filter 303 and the glass fiber filter 304 in sequence. The non-woven fabric filter 303 can intercept paint droplets and particles with larger particle sizes, and the glass fiber filter 304 further filters the tiny particles, thus achieving the preliminary purification of the exhaust gas. The exhaust gas after preliminary filtration enters the absorption liquid tank 2 through the discharge pipe 4.

[0029] Next, the exhaust pipe 4 guides the waste gas into the absorbent liquid inside the absorbent liquid tank 2. The absorbent liquid can be added through the injection pipe 15. Water-soluble pollutants and some paint droplets in the waste gas are absorbed or dissolved by the absorbent liquid. Then, the waste gas after absorption treatment enters the treatment tank 5 through the connecting pipe 6. The ultraviolet lamp plate 7 on the top wall of the treatment tank 5 emits ultraviolet light to irradiate the catalyst treatment layer 8. Under the synergistic effect of ultraviolet light and catalyst, the residual volatile organic compounds in the waste gas undergo photocatalytic oxidation reaction, decomposing into harmless substances such as carbon dioxide and water, further reducing the concentration of pollutants in the waste gas. Then, the photocatalytically oxidized waste gas enters the activated carbon adsorption cylinder 11 through the guide outlet pipe 10. At this time, the residual small molecule pollutants and odor substances in the waste gas are adsorbed by the activated carbon in the activated carbon adsorption cylinder 11. Since it has undergone multi-stage filtration and treatment in the early stage, most of the paint droplets have been removed, effectively avoiding the clogging of the activated carbon pores and improving the adsorption efficiency.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for collecting and treating exhaust gas from wood product painting, characterized in that: The system includes a collection hood (1), an absorption liquid tank (2) on one side of the collection hood (1), an extraction filter (3) fixedly embedded on one side of the collection hood (1), a discharge pipe (4) above the absorption liquid tank (2), the bottom end of the discharge pipe (4) penetrating the absorption liquid tank (2) and extending into the interior of the absorption liquid tank (2), a connecting pipe (6) fixedly connected to one side of the absorption liquid tank (2), a processing tank (5) fixedly connected to one end of the connecting pipe (6), an ultraviolet lamp plate (7) fixedly installed on the inner top wall of the processing tank (5), a catalyst treatment layer (8) fixedly installed on the inner wall of the processing tank (5), the ultraviolet lamp plate (7) and the connecting pipe (6) are both located above the catalyst treatment layer (8), and an activated carbon adsorption cylinder (11) fixedly installed on one side of the processing tank (5).

2. The wood product paint waste gas collection and treatment device according to claim 1, characterized in that: The extraction filter element (3) includes an extraction filter cover (301) fixedly embedded on one side of a collection cover (1), and a centrifugal fan (302) is fixedly installed on the inner wall of the extraction filter cover (301).

3. The wood product paint waste gas collection and treatment device according to claim 2, characterized in that: The inner wall of the extraction filter cover (301) is fixedly installed with a non-woven fabric filter screen (303) and a glass fiber filter screen (304), and one end of the extraction filter cover (301) is movably connected to one end of the discharge pipe (4).

4. The wood product paint waste gas collection and treatment device according to claim 1, characterized in that: The bottom surface of the collection hood (1) is fixedly connected to a plurality of flow guide hoods (13), and the inner wall of each flow guide hood (13) is fixedly connected to a mesh plate (14).

5. The wood product paint waste gas collection and treatment device according to claim 1, characterized in that: A connecting block (12) is fixedly installed on one side of the absorption liquid tank (2), and one side of the connecting block (12) is fixedly installed on one side of the treatment tank (5).

6. The wood product paint waste gas collection and treatment device according to claim 1, characterized in that: The upper surface of the absorption tank (2) is fixedly connected to an injection pipe (15), the outer surface of the absorption tank (2) is fixedly inlaid with a transparent observation plate (9), the bottom surface of the absorption tank (2) is fixedly connected to a drain pipe (16), and the outer surface of the drain pipe (16) is fixedly connected to a drain valve (17).

7. The wood product paint waste gas collection and treatment device according to claim 1, characterized in that: One side of the treatment box (5) is fixedly connected to a gas outlet pipe (10), the top end of which penetrates the activated carbon adsorption cylinder (11) and extends into the interior of the activated carbon adsorption cylinder (11).

Images